... a. O.D.: 1/2'' to 4'' b. W.T.:SCH40,80,160 c. Standards: DIN17175 Seamless round ... : 1M-13M, can as customers requirementSIZE: 1/8" to 24"W.T SCH 5, SCH 10, SCH 20, ... steel pipe2. seamless steel pipe3. steel casing4. tubing5. hot-rolled steel pipe6. spiral steel pipe7. square steel pipe8 ... . hot-galvanized steel pipe standard: API5CT, API5L, ASTM, JIS, ...